I need help please help me out

Step-by-step explanation:

First one..

move the green dot one step to the left

Interactive table

U is under the operation a-b

where a = -1 and b = -2

U = -1 - (-2)

U = -1 + 2

U = 1

V is under the operation a-b

where a = -4 and b = 1

V = -4 -1

V = -5

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐

the olimpics is not going to wokk out

step-by-step explanation: